peters



Dec. 11, I928.

.Filed Nov. 1. 1922 Fig". 4.

l 'stented ii, 192%.

EIVKIL EETERS, DIE CREFELD, GERMANY.

DYNAMIC AND EFFICIENCY IVUElTER.

Application filed November I, 192%, Serial No. 598,451, and in GermanyNovember 8, 1921.

My invention relates to counters, more especially for ascertaining andindicating and/or recording any data, for instance the pertormzuice ot asteam engine within a, predetermined time interval.

lit a steam engine, for instance 3. locomotive, were operz'itedcontinuously at uniform dinission and uniform steam pressure, itspertorn'iance mi ght be measured by counting the strokes of the pistonor pistons or the revolutions of the shaft or axle by means of acounter, a recording; device or a combination. of both. in practice,however, the degree of :uhnission and the steam pressure are not u nitoii'in.

Assinning iii-st that the steam pressure is uniiliui'in, it is necessaryto ascertain the in iluence oi various degrees of admission on thepm'ilt'ornu'znee during one revolution of the engine, and to operate acoiniter in proportion to this interconnection of degree of admissionand performance, so that the counter will in dicate the actualperformance at the predeten mined. degree oi" admission.

The means for attaining this object old. in the art, being :1 cam(moi-sting the counter. The cam is controlled by the means torregulating the degree 0t admission so that u delii'iite position of thecam corresponds to each degree of admission. The performances of theengine at the various degrees of admission are marked on the cam so thatfor each revolution the performance corresponding to the given degree ofadm'ssion is indicated by the counter.

in practice, however, the steam pressure is not I ini'lorm either andthis may be considered by designing cums tor a, constant degree oitailini, ion, and variable .sl'ozun pressures.

iir-cori lijiig to my invention it build up av rotary element whichconstituted by a set of. can'is, each cam COIlGSPOHCliUg to theperformance at a given steam pressure. and l PTOVlKlQ means foradjusting: suid element in accordance with the existing conditions o'liadmission and stenn'i pressure.

in a preferred embodiment of my invention in which the (BOHlilT-Ol isadapted. to a. steam engine, for instance a lOCOlliOiflYO, I providemeans for rotating the element rrom one oi? the controls of the engine,for instance the gear for regulating its degree of admission, and Iprovide iii-cans for imparting axial reciprocation to the element fromanother control oi the engine, tor instance its throi l'lc. Conversely,I may provide means for reciprocating the cam from the throttle and torrotating it from the control for the degree of admission, Withoutdeparting from my inven tion.

In the drawings aflixed to this specification and forming part thereof,a counter embodying my invention is illustrated diagrammatically by wayof example as adapted to a locomotive.

In the drawings Fig. 1 is an elevation showing the arrangement of thecounter and its accessories in the cab of a locomotive,

2 and 3 are sections on the lines H H and ill-Jill of F 1.,respectively, and

Fig. l is a diagram which serves for explaining the theory of theinstrument.

Referring now to l, l. is the reversin screw oil: a locomotive, A is thelunckel in which the. screw is carried, l) is the handle ot the screwand O is its reach rod which extends through an opening in the troutwall l) oi the cab.

2 is a. bevel gear at the end of the r yersnur screw, 2 is a bevel whichmeshes with the gear 2 and is secured on a shaft 3 which is carried insuitable bearings on the lu'aeket A, i is a cum element on the shaft 3which keyed thereto so as to partake in its rotation, 5 is adouble-armed lever which is tulcrumed on a suitable bracketat the wall Dan d linked to the Bourdon tube oi a pressure ango t3, 6 is the steampipe connecting the gauge with it valve chest or the valve chests, notshown. of the locomotive, '7 is a rocking lever, 8 is a roller at its:tront end which is adopted to cooperate with the can] element t, 9 is asus pension. link by which the lever T is carried on the bracket A, f)is a spring which is at tachcd to the suspensitm link fl at one end andto the upper bearing oi? the shaft 3 at the other so as to hold theroller 8 engaged with. the face of the cam element l, 11 is an eccentricto which rotation imparted from any moving part, for instance thespeedometer shaft 12, so that rocking motion about the centre oi? theroller 8 is imparted. to the tel-kshaped end of the lever 7, 1?) is aparallel guide secured to the bracket ii. 14: is a slide blockin theguide, 15, 15 are curved jaws on the block which engage the lever l oneither side, 16 is a pawl linked to the slide 14-, and. 1? is a ratchetwheel on a counter 18 which is secured to the bracket A so that its dialis visible to the driver.

Referring now to the diagram, l, a is the constant distance of thelongitudinal axis of the slide 1 1 from the eccentric shaft 12 it isthe, also constant, stroke of the eccentric 12, y is the variablestrolze oil the pawl 16 which corresponds to a given admission and agiven steam pressure in the valve chest and may be calculated or plottedfrom a steam diagram, and m is the variable distance of the axis of theroller 8 from the axis of the slide ll. The distance as is calculated asfollows:

Instead of ilotnn the performance oil? a locomotive a st glie steampressure and i-onfigurati 'c of the cam element 4: accordingly, may alsogenerate the curve h v automatic means. this case, the reeling' lever 7and the parts cooperating therewith are duplicated in a machine tool andthe roller 8 at the end of the lever 7 is replaced by a milling; cutter.The eccentric 1 is staond counter 21 may he provided which is can riedat the end of an angular lever 9. The

lever 19 is tulcrumed to the lataclze" at 20 and is provided with a 56m.wheel or the like 22 by which it is 00111 ,d with and driven by, thecounter 18 wh en. the leve 19 is rocked on its pivot correspondinglv. Anarm 19' is formed on the suspension link 9 in such a po sition that itcauses the two counters 18 and 21 to become connected under theabove-men tioned conditions of light load and the output will now heregistered sqiai'ately hy the counter 21. Beyond the limit of the saidsmall performance, the counter 21 is automatically released by the arm19.

Recording means ma he provided in connectien with the gauge 6 and withthe pawl 16 so that the performance of the loconnjitive is directlyregistered instead of locin only indicated by the counters.

It will he understood. that by setting the reversing screw 1 "for agiven admission and by opening the throttle valve to a certain extent, agiven position will he imparted to the cam element with regard to theroller 8 and the distance of the roller 8 from the eccentric shatt 1&2,a+m in the diagram Fig. 4t, will he adjusted accordii'igly. A givenvalue of m (m-responds to each oi these positions.

3 claim 1. it counter "for ascertaining the performance of a strainengine con'iprising indicatmeans, a rotary cam clement tor operatingsaid means, means connected with the means for regulating the degreeoil? admission ot said engine and. adapted to impart rotation to saidcam elemenh and a pressure gauge adapted to impart axial reciprocationto said cl em e1 it.

1i, counter for ascertaining the performance of a steam engine compr' noindicating means, a rotary cam element I01 operating said i'nezms apressu e gauge adapted to impart axial. reciproca n to said cam element,and means connected with the means for regulating); the degree ofadmission of said en ine and adapted to impart rotation to said camelement.

In testimon whereof I aifiix my signature.

Elvfllli PETERS.

